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Kinetics of solution polymerisation of trioxane—I. Polymerisation during induction period

✍ Scribed by M.N. Chandrashekara; D. Desai; M. Chanda

Book ID
103072111
Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
562 KB
Volume
21
Category
Article
ISSN
0014-3057

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✦ Synopsis

A study has been made of the solution polymerisation of trioxane in 1,2-dichloroethane with boron trifluoride diethyl etherate as the initiator during the induction period. The experimental parameters varied were initiator concentration, initial trioxane concentration and temperature. The rates of trioxane consumption, tetroxane production and formaldehyde production and the rate of increase in the amount of soluble linear oligomers increased with increase in the initial concentrations of initiator and trioxane and with increase in temperature. The results also indicate an equilibrium between formaldehyde and cationic species. A kinetic model is proposed for polymerisation of trioxane during the induction period. The model proposes three parallel irreversible reactions between trioxane and cationic species and a reversible reaction between formaldehyde and cationic species. The scheme involves five rate constants which are determined from statistical fit of experimental data. The predictions of concentration-time profiles for various species are in excellent agreement with the experimental results.

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